Conventions Used in This Book
The following typographical conventions are used in this book:
Indicates new terms, example URLs, email addresses, filenames, file
extensions, pathnames, directories, and Unix utilities.
- Constant width
Indicates commands, options, switches, variables, attributes, keys,
functions, types, classes, namespaces, methods, modules, properties,
parameters, values, objects, events, event handlers, XML tags, HTML
tags, macros, the contents of files, or the output from commands.
Constant width bold
Shows commands or other text that should be typed literally by the
user, and is used to emphasize code in examples.
- Constant width italic
Shows text that should be replaced with user-supplied values. In some
cases where text is already italicized, user-supplied values are
shown in angled brackets (< >)
This icon signifies a tip, suggestion, or general note.
This icon indicates a warning or caution.